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Open-source package vulnerability · npm

CVE-2026-31856: Parse Server vulnerable to SQL injection via `Increment` operation on nested object field in PostgreSQL

criticalCVSS 4.0 9.3GHSA-q3vj-96h2-gwvg

Impact A SQL injection vulnerability exists in the PostgreSQL storage adapter when processing Increment operations on nested object fields using dot notation (e.g., stats.counter). The amount value is interpolated directly into the SQL query without parameterization or type validation.

Published Mar 11, 2026

Affected packages

parse-server

Ecosystem
npm
Affected
>= 9.0.0-alpha.1, < 9.6.0-alpha.3
Fixed in
9.6.0-alpha.3
Check
npm ls parse-server

parse-server

Ecosystem
npm
Affected
< 8.6.29
Fixed in
8.6.29
Check
npm ls parse-server

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

Impact

A SQL injection vulnerability exists in the PostgreSQL storage adapter when processing Increment operations on nested object fields using dot notation (e.g., stats.counter). The amount value is interpolated directly into the SQL query without parameterization or type validation. An attacker who can send write requests to the Parse Server REST API can inject arbitrary SQL subqueries to read any data from the database, bypassing CLPs and ACLs.

MongoDB deployments are not affected.

Patches

The fix adds type validation to reject non-number values and parameterizes the value in the SQL query instead of interpolating it.

Workarounds

There is no known workaround.

References

  • GitHub security advisory: https://github.com/parse-community/parse-server/security/advisories/GHSA-q3vj-96h2-gwvg
  • Fix Parse Server 9: https://github.com/parse-community/parse-server/releases/tag/9.6.0-alpha.3
  • Fix Parse Server 8: https://github.com/parse-community/parse-server/releases/tag/8.6.29

Credited to offset, mtrezza.

References

How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology

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